The presence of organic peroxide in chemicals can be tested with simple indicator paper - Whatman starch iodide
paper.The Whatman starch iodide paper is sensitive to peroxide concentration
below 100 ppm.Low
concentration of peroxide present in chemicals turns the paper yellow whereas,
high concentration of peroxide turns the paper blue.This test is sensitive to the formation of hydroperoxide which is the
principal hazard associated with peroxide-forming solvent.

1.

Immerse the test strip in the chemical for 1
second

2.Breathe slowly on the test strip for 15 to 30
seconds or until the color stabilizes (vapor in breathe provides water for the
reaction to proceed)

3.A yellow color indicates a low concentration of
peroxide in the sample while blue color indicates a high concentration.